Try running the OBD Diagnostic test mode 3

http://www.brickboard.com/FAQ/700-900/EngineOBDCodes.htm#LH24FuelInjectionFault

Diagnostic Test Mode 3: Injection System Component Activation Test
Turn the ignition ON to KPII and install the cable into socket 2 for fuel-injection-related tests.
Press the button three times for one second each time (waiting between >1 and <3 seconds before pressing again)
The diagnostic unit then tests selected components: engine coolant fan (if equipped), fuel injectors, idle air control solenoid valve, carbon filter solenoid valve (if equipped), cold start valve, radio suppression relay and fuel pump, each of which you can hear or feel.
Exit by switching off the ignition

You should hear the injectors clicking like crazy for about ten seconds. If they do, you've got power to the injectors. Also, let the test repeat three or four times. Exercising the injector solenoids might knock some of the accumulated crud off.